In 2004, the driver of the Dave Matthews Band tour bus emptied the septic tank while over the Chicago River, dumping 800lbs of human waste onto a tour boat.

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The bus was on the Kinzie St bridge, which has a grated bottom.

"Stefan Wohl, 42, was sentenced to 18 months of probation, 150 hours of community service and a $10,000 fine after pleading guilty to misdemeanor charges of reckless conduct and water pollution."

On the bright side of things, Chicago's architectural boat tours are pretty incredible.